I search one keyword in google search engine some time that keyword listed in first page..some time not listed google search page..what is the reason....please help me
Strange, may i know the keyword and website name. It might be possible that keyword move to second/third page.
There may be several reasons. 1. If you are logged with your google account the sites that you use to visit are placed on top pages and if you are not logged the sites are placed on lower pages 2. "Google Dancing" - google changes often the results order 3. Your site may be penalized